---
title: "You can now choose 12-hour prompt caching in the API. 12-hour prompt caching keeps shared instructions, tools, and context cached longer to benefit from lower cached-input prici…"
type: signal
url: https://frontiernewswire.com/s/you-can-now-choose-12-hour-prompt-caching-in-the-api-12-hour-prompt-6eb8dca6
published: 2026-10-20T00:00:00.000Z
byline: "Source: OPENAI"
---

# You can now choose 12-hour prompt caching in the API. 12-hour prompt caching keeps shared instructions, tools, and context cached longer to benefit from lower cached-input prici…

Source: OPENAI · Published 2026-10-20 · Canonical: https://frontiernewswire.com/s/you-can-now-choose-12-hour-prompt-caching-in-the-api-12-hour-prompt-6eb8dca6

## Sources

- [Read the original at OPENAI](https://developers.openai.com/api/docs/guides/prompt-caching)

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